STRENGTHS:Appears in huge groups, the goop that one creates can spawn more.

WEAKNESSES:Extremely easy to destroy.

BACKGROUND:Shadow Mario's paint isn't just any paint. It has a special power: It can spawn small creatures. They can multiply easily, too! That's why they are so hard to destroy.
Although they share a name with Strollin' Stu and te rest of the "Stu" family, it seems unlikely that they are related.